Hydraulic Retrieving Tool Drift Mechanism for Deflector Access
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Solution Overview
Problem
Current wellbore operations lack an efficient method to install and confirm the depth and orientation of deflectors in primary wellbores for ensuring access to lateral wellbores, which is crucial for effective lateral wellbore operations.
Innovation Solution
A hydraulic retrieving tool with retractable dogs and deflective pads is used to install and confirm the deflector's position, allowing for expansion to secure the tool in place and then expand further to drift the deflector surface, confirming lateral access and enabling the use of wellbore tools in the lateral wellbore or facilitating deflector retrieval if access is not confirmed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a deflector is installed in the primary wellbore to orient wellbore tools toward the lateral wellbore, then access to the lateral wellbore is enabled, but the depth and orientation accuracy of the deflector cannot be confirmed
Solution Approach 1:
The hydraulic retrieving tool incorporates sensors that detect the position and orientation of the deflector during installation. This feedback mechanism allows real-time verification of deflector placement accuracy, enabling operators to confirm whether the deflector has been installed at the correct depth and orientation before finalizing the lateral wellbore access.
Solution Approach 2:
The patent replaces traditional mechanical measurement methods with a hydraulic system. The hydraulic retrieving tool uses fluid pressure and hydraulic actuators to both install the deflector and subsequently retrieve it, while sensors detect position data throughout the process. This substitution enables more precise measurement and confirmation of deflector orientation compared to conventional mechanical approaches.
2Measurement precision
If multiple wellbore trips are used to install and confirm deflector position, then measurement precision is improved, but productivity is reduced
Solution Approach 1:
The hydraulic retrieving tool is designed to perform multiple functions within a single wellbore trip: installing the deflector, confirming its position through sensor feedback, and potentially retrieving it if needed. This multi-functional capability eliminates the need for separate wellbore trips for installation and verification, thereby improving productivity while maintaining measurement precision.
Solution Approach 2:
The hydraulic retrieving tool enables continuous verification of deflector placement during the same operational sequence in which the deflector is installed. The sensors provide continuous feedback on position and orientation, allowing operators to confirm accuracy immediately after installation without interrupting the wellbore operation for additional trips, thus maintaining continuous useful action.
3Ease of operation
If the hydraulic retrieving tool is designed with expandable dogs and deflective pads, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The hydraulic retrieving tool employs dynamically adjustable components including expandable dogs and deflective pads that can change their configuration based on operational needs. These components are actuated by hydraulic pressure, allowing them to expand for secure engagement during installation and retract for easy retrieval. This dynamic capability simplifies operation while the hydraulic actuation mechanism manages the inherent structural complexity.
Solution Approach 2:
The patent uses hydraulic systems to control the expansion and retraction of the tool's engagement features. The hydraulic actuators provide reliable, controlled movement of the dogs and deflective pads, simplifying the operation of installing and retrieving deflectors. While this hydraulic control adds some system complexity, it greatly enhances ease of operation compared to manual or mechanical adjustment methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the efficient installation and confirmation of deflector orientation in a single wellbore trip, ensuring accurate lateral access and enabling the use of wellbore tools while providing the option to exchange deflectors if initial access is not achieved.
Implementation Method 1
hydraulic retrieving tool with retractable dogs and deflective pads is used to install and confirm the deflector's position, allowing for expansion to secure the tool in place
Data Source
AI summary
Methods and apparatus for installing a deflector in a primary wellbore and confirming lateral wellbore access. The hydraulic retrieving tool is coupled to the interior of the deflector and introduced into the primary wellbore. The hydraulic retrieving tool comprises a bullnose, a plurality of retractable deflective pads, and a retractable dog. The deflector comprises a deflection surface. The hydraulic retrieving tool is decoupled from the interior of the deflector at a depth in the primary wellbore by retracting the dog and the plurality of deflective pads. The hydraulic retrieving tool is removed from the interior of the deflector. The dog and the plurality of deflective pads on the hydraulic retrieving tool are expanded when the hydraulic retrieving tool is removed from the interior of the deflector. The hydraulic retrieving tool drifts at least a portion of the deflection surface to determine if there is lateral wellbore access.